[STATUS 2.5] March 27, 2002

Guillaume Boissiere (boissiere@attbi.com)
Tue, 26 Mar 2002 23:29:43 -0500

The latest 2.5 status update is available at the usual URL

Of note this week is the availability of the new and shiny
NTFS driver, which will be submitted for inclusion soon.

As usual, let me know of any inaccuracies or omissions.

-- Guillaume

Kernel 2.5 status - March 27th, 2002
(Latest kernel release is 2.5.7)


o in 2.5.1+ Rewrite of the block IO (bio) layer (Jens Axboe)
o in 2.5.2 Initial support for USB 2.0 (David Brownell,
Greg Kroah-Hartman, etc.)
o in 2.5.2 Per-process namespaces, late-boot cleanups (Al Viro, Manfred
o in 2.5.2+ New scheduler for improved scalability (Ingo Molnar)
o in 2.5.2+ New kernel device structure (kdev_t) (Linus Torvalds,
o in 2.5.3 IDE layer update (Andre Hedrick)
o in 2.5.3 Support reiserfs external journal (Reiserfs team)
o in 2.5.3 Generic ACL (Access Control List) support (Nathan Scott)
o in 2.5.3 PnP BIOS driver (Alan Cox, Thomas
Hood, Dave Jones, etc.)
o in 2.5.3+ New driver model & unified device tree (Patrick Mochel)
o in 2.5.4 Add preempt kernel option (Robert Love,
MontaVista team)
o in 2.5.4 Support for Next Generation POSIX Threading (NGPT team)
o in 2.5.4+ Porting all input devices over to input API (Vojtech Pavlik,
James Simmons)
o in 2.5.5 Add ALSA (Advanced Linux Sound Architecture) (ALSA team)
o in 2.5.5 Pagetables in highmem support (Ingo Molnar,
Arjan van de Ven)
o in 2.5.5 New architecture: AMD 64-bit (x86-64) (Andi Kleen, x86-
64 Linux team)
o in 2.5.5 New architecture: PowerPC 64-bit (ppc64) (Anton Blanchard,
ppc64 team)
o in 2.5.6 Add JFS (Journaling FileSystem from IBM) (JFS team)
o in 2.5.6 per_cpu infrastructure (Rusty Russell)
o in 2.5.6 HDLC (High-level Data Link Control) update (Krzysztof Halasa)
o in 2.5.6 smbfs Unicode and large file support (Urban Widmark)
o in 2.5.7 New driver API for Wireless Extensions (Jean Tourrilhes)
o in 2.5.7 Video for Linux (V4L) redesign (Gerd Knorr)
o in 2.5.7 Futexes (Fast Lightweight Userspace Semaphores) (Rusty Russell,
o in 2.5.7+ NAPI network interrupt mitigation (Jamal Hadi
Salim, Robert Olsson, Alexey Kuznetsov)
o in 2.5.7+ ACPI (Advanced Configuration & Power Interface) (Andy Grover,
ACPI team)

o Pending Finalize new device naming convention (Linus Torvalds)
o in -dj Rewrite of the framebuffer layer (James Simmons)
o in -ac Strict address space accounting (Alan Cox)
o in -ac PCMCIA Zoom video support (Alan Cox)
o in -ac More complete IEEE 802.2 stack (Arnaldo, Jay
Schullist, from Procom donated code)

o Ready Add hardware sensors drivers (lm_sensors team)
o Ready New kernel config system: CML2 (Eric Raymond)
o Ready Read-Copy Update Mutual Exclusion (Dipankar Sarma,
Rusty Russell, Andrea Arcangeli, LSE Team)
o Ready Better event logging for enterprise systems (Larry Kessler,
evlog team)
o Ready New quota system supporting plugins (Jan Kara)
o Ready Replace old NTFS driver with NTFS TNG driver (Anton

o Beta New kernel build system (kbuild 2.5) (Keith Owens)
o Beta Add support for CPU clock/voltage scaling (Erik Mouw, Dave
Jones, Russell King, Arjan van de Ven)
o Beta Serial driver restructure (Russell King)
o Beta New IO scheduler (Jens Axboe)
o Beta Add XFS (A journaling filesystem from SGI) (XFS team)
o Beta New VM with reverse mappings (Rik van Riel)
o Beta Fix long-held locks for low scheduling latency (Andrew Morton,
Robert Love, etc.)
o Beta Build option for Linux Trace Toolkit (LTT) (Karim Yaghmour)
o Beta Add Linux Security Module (LSM) (LSM team)
o Beta Hotplug CPU support (Rusty Russell)
o Beta Per-mountpoint read-only, union-mounts, unionfs (Al Viro)
o Beta EVMS (Enterprise Volume Management System) (EVMS team)
o Beta LVM (Logical Volume Manager) v2.0 (LVM team)
o Beta Linux booting ELF images (Eric Biederman)
o Beta First pass at LinuxBIOS support (Eric Biederman)
o Beta Dynamic Probes (Suparna
Bhattacharya, dprobes team)
o Beta Scalable CPU bitmasks (Russ Weight)
o Beta Page table sharing (Daniel Phillips)
o Beta Rewrite of the console layer (James Simmons)
o Beta ext2/ext3 online resize support (Andreas Dilger)
o Beta Radix-tree pagecache (Momchil Velikov,
Christoph Hellwig)
o Beta Fast walk dcache (Hanna Linder)
o Beta Add User-Mode Linux (UML) (Jeff Dike)
* Beta UDF Write support for CD-RW and CD-R (Jens Axboe,
Peter Osterlund)

o Alpha Better support of high-end NUMA machines (NUMA team)
o Alpha Add Asynchronous IO (aio) support (Ben LaHaise)
o Alpha Overhaul PCMCIA support (David Woodhouse,
David Hinds)
o Alpha Full compliance with IPv6 (Alexey
Kuznetzov, Jun Murai, Yoshifuji Hideaki, USAGI team)
o Alpha UMSDOS (Unix under MS-DOS) Rewrite (Al Viro)
o Alpha Scalable Statistics Counter (Ravikiran
o Alpha Linux Kernel Crash Dumps (Matt Robinson,
LKCD team)
o Alpha Add support for NFS v4 (NFS v4 team)
o Alpha ext2/ext3 large directory support: HTree index (Daniel Phillips,
Christopher Li, Ted Ts'o)
o Alpha Delayed disk block allocation (Andrew Morton)
o Alpha Improved i2o (Intelligent Input/Ouput) layer (Alan Cox)

o Started More complete NetBEUI stack (Arnaldo Carvalho
de Melo, from Procom donated code)
o Started Remove use of the BKL (Big Kernel Lock) (Alan Cox, Robert
Love, Neil Brown, etc.)
o Started Change all drivers to new driver model (All maintainers)
o Started Reiserfs v4 (Reiserfs team)
o Started Move ISDN4Linux to CAPI based interface (ISDN4Linux team)

o Draft #2 New lightweight library (klibc) (Greg Kroah-
o Draft #3 Replace initrd by initramfs (H. Peter Anvin,
Al Viro)
o Planning Add thrashing control (Rik van Riel)
o Planning Remove all hardwired drivers from kernel (Alan Cox, etc.)
o Planning Generic parameter/command line interface (Keith Owens)
o Planning New mount API (Al Viro)
o Planning New MTRR (Memory Type Range Register) driver (Dave Jones)


o in 2.5.3 Break Configure.help into multiple files (Linus Torvalds)
o in 2.5.3 Untangle include file dependancies (Dave Jones,
Roman Zippel)
o in 2.5.4 Per network protocol slabcache & sock.h (Arnaldo Carvalho
de Melo)
o in 2.5.4 Per filesystem slabcache & fs.h (Daniel Phillips,
Jeff Garzik, Al Viro)
o in 2.5.6 Killing kdev_t for block devices (Al Viro)

o Ready Switch to ->get_super() for file_system_type (Al Viro)
o Ready ->getattr() ->setattr() ->permission() changes (Al Viro)
o Ready Remove dcache_lock (Maneesh Soni,
IBM team)

o Beta file.h and INIT_TASK (Benjamin LaHaise)
o Beta Proper UFS fixes, ext2 and locking cleanups (Al Viro)
o Beta Lifting limitations on mount(2) (Al Viro)

o Started Split up x86 setup.c into managable pieces (Dave Jones,
Randy Dunlap)
o Started Reorder x86 initialization (Dave Jones,
Randy Dunlap)

Have some free time and want to help? Check out the Kernel Janitor
TO DO list for a list of source code cleanups you can work on.
A great place to start learning more about kernel internals!

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